Jump to content

File:The Biological bulletin (20189537288).jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (1,984 × 2,324 pixels, file size: 1.58 MB, MIME type: image/jpeg)

Summary

Description
English:

Title: The Biological bulletin
Identifier: biologicalbullet158mari (find matches)
Year: [1] (s)
Authors: Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983
Subjects: Biology; Zoology; Biology; Marine Biology
Publisher: Woods Hole, Mass. : Marine Biological Laboratory
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
264 SZMANT-FROELICH, YEVICH AND PILSON
Text Appearing After Image:
FIGURE 10. Photomicrographs of various stages in the embryonic development of Astrangia danae. A. Unfertilized egg wth eccentric nucleus. B. First cleavage proceeds from animal to vegetal pole. C. First division complete; notice small protuberances being pinched off at vegetal pole. D. Psuedospiral arrangement of blastomeres after second division. E. Irregularly shaped embryos resulting from nonsynchronous third and fourth divisions. F. Embryo of around 20 blastomeres, with large blastocoele. G. Sixty-four cell stage; blasto- meres still rounded. H. Blastula stage; blastomeres compressed. I. Planula stage, showing apical tuft of cilia and oral pore. Abbreviations: AP—animal pole; AT—apical ciliary tuft; B—blastocoele; N—nucleus; OP—oral pore. Scale bars are 10 /xm. Few eggs remained in the gonads. By mid-September, however, stage I and II oocytes began to appear in the mesenteries again. Although some of these oocytes developed as far as stage IV, they were never as numerous and they never attained the size of the mid-summer oocytes. As with the male colonies, there was no evi-

Note About Images

Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Date
Source

https://www.flickr.com/photos/internetarchivebookimages/20189537288/

Author Internet Archive Book Images
Permission
(Reusing this file)
At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Flickr tags
InfoField
Flickr posted date
InfoField
7 August 2015



Licensing

This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as:
  1. The copyright is in the public domain because it has expired;
  2. The copyright was injected into the public domain for other reasons, such as failure to adhere to required formalities or conditions;
  3. The institution owns the copyright but is not interested in exercising control; or
  4. The institution has legal rights sufficient to authorize others to use the work without restrictions.

More information can be found at https://flickr.com/commons/usage/.


Please add additional copyright tags to this image if more specific information about copyright status can be determined. See Commons:Licensing for more information.
This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/20189537288. It was reviewed on 23 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

23 September 2015

Captions

Cleavage during the embryonic development of Astrangia danae.

Items portrayed in this file

depicts

image/jpeg

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current11:06, 23 September 2015Thumbnail for version as of 11:06, 23 September 20151,984 × 2,324 (1.58 MB)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Title''': The Biological bulletin<br> '''Identifier''': biologicalbullet158mari ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=i...

The following page uses this file:

Global file usage

The following other wikis use this file: